ArcGIS Pro 2.7 API Reference Guide
IsHidden Property

ArcGIS.Desktop.Mapping Namespace > TOCActiveMapViewProviderPane Class : IsHidden Property
Gets a flag indicating if this pane has been hidden.
Syntax
public bool IsHidden {get;}
Public ReadOnly Property IsHidden As Boolean
Remarks
For 3rd party panes, IsHidden will always be false.
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

TOCActiveMapViewProviderPane Class
TOCActiveMapViewProviderPane Members